There are many types of dark nights. One is where the awakening process brings up what in us is still stuck in separation consciousness so this can heal, be more aligned with reality, and wake up. It’s an essential part of the awakening and embodiment process.
During this phase, we can feel overwhelmed, confused, and swamped by all that’s surfacing. To us, it usually feels very dark and it may be difficult to imagine it will ever end.
In the Dark Night of the Soul chapter from Evelyn Underhill’s Mysticism, she suggests through quotes what’s actually happening: there is a large influx of light into our system, this pushes the metaphorical darkness in us to the surface, and that’s what naturally catches our attention.
In this situation, it can be difficult or impossible to notice or be aware of the light in our system. The lack of comfort is almost an inbuilt part of the process.
In my case, since I can see energies, I did notice a clear and strong light around my body even during the darkest parts of this process, and I have seen the same in others. Still, that was a meager comfort at the time.